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Achieving More with Less Water: Alternate Wet and Dry Irrigation (AWDI) as an Alternative to the Conventional Water Management Practices in Rice Farming

Author

Listed:
  • Tejendra Chapagain
  • Andrew Riseman
  • Eiji Yamaji

Abstract

Alternate Wet and Dry Irrigation (AWDI) is a water management system where rice fields are not kept continuously submerged but are allowed to dry intermittently during the rice growing stage. A field experiment was conducted in Chiba, Japan during the rice growing season (May-September) of 2008 to assess AWDI and continuous submerged water management practices for their effects on productivity, the surrounding environment, water savings, and Water Productivity Index (WPI). The impact of age of seedlings and plant spacing were also assessed. AWDI using the proposed irrigation schedule of 10 wet days alternated with 10 dry days used less water (29% less water) without significant reduction in grain yield (7.2 t/h) compared with conventional irrigation (7.8 t/h). Water Productivity Index was significantly higher in all sub-plots in AWDI treatments. WPI was 1.7 kg/m3 in AWDI treatments compared to 1.3 kg/m3 in conventional water management. Additional significant results from AWDI treatment included reduced pest and disease incidence, shortened crop cycle, and reduced lodging. However, slightly higher grain yields were observed in all sub-plots of the conventional irrigation treatment than were observed in the same combinations under AWDI. This underscores the need for further research in defining what constitutes an optimum interval for AWDI considering local soil properties, prevailing climate, and the critical periods during the rice growth cycle when the yield was particularly sensitive to moisture stress.

Suggested Citation

  • Tejendra Chapagain & Andrew Riseman & Eiji Yamaji, 2011. "Achieving More with Less Water: Alternate Wet and Dry Irrigation (AWDI) as an Alternative to the Conventional Water Management Practices in Rice Farming," Journal of Agricultural Science, Canadian Center of Science and Education, vol. 3(3), pages 1-3, September.
    • Handle: RePEc:ibn:jasjnl:v:3:y:2011:i:3:p:3
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    References listed on IDEAS

    as
    1. Guera, L.C. & Bhuiyan, S.I. & Tuong, T.P. & Barker, R., 1998. "Producing More Rice with Less Water from Irrigated Systems," IRRI Discussion Papers 287568, International Rice Research Institute (IRRI).
    2. repec:iwt:bosers:h023175 is not listed on IDEAS
    3. repec:iwt:rerpts:h027579 is not listed on IDEAS
    4. Sinha, Shekhar Kumar & Talati, Jayesh, 2007. "Productivity impacts of the system of rice intensification (SRI): A case study in West Bengal, India," Agricultural Water Management, Elsevier, vol. 87(1), pages 55-60, January.
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    Cited by:

    1. Soumya Balasubramanya, 2025. "Groundwater Use in Agriculture in South Asia: The Role of Technology," Agricultural Economics, International Association of Agricultural Economists, vol. 56(3), pages 474-484, May.
    2. Balasubramanya, Soumya, 2024. "Rationalizing groundwater use in agriculture in South Asia: the role of technology," IAAE 2024 Conference, August 2-7, 2024, New Delhi, India 344327, International Association of Agricultural Economists (IAAE).
    3. Adha Siregar & Ibrahim Sipahutar & Husnain Husnain & Heri Wibowo & Kuniaki Sato & Toshiyuki Wakatsuki & Tsugiyuki Masunaga, 2016. "Influence of Water Management and Silica Application on Rice Growth and Productivity in Central Java, Indonesia," Journal of Agricultural Science, Canadian Center of Science and Education, vol. 8(12), pages 1-86, November.

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    • R00 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General - - - General
    • Z0 - Other Special Topics - - General

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